Tested a trackmaster revolution Bulstrode to see if it floats in the water. Like the Bulstrode in the TV series, it sank.
My Trackmaster/Tomy/Plarail Photo Gallery Page (over 600+ photos and still under construction)
https://www.flickr.com/photos/183311600@N03/
https://www.flickr.com/photos/183311600@N03/